Synthesis and reactivity of benzothiazol-2-ylcarbonylhydroximoyl chloride, a versatile synthon
作者:Ahmad M. Farag、Kamal M. Dawood、Abdou O. Abdelhamid
DOI:10.1016/s0040-4020(97)10194-6
日期:1997.12
The versatile, hitherto unreported benzothiazol-2-ylcarbonylhydroximoyl chloride (2) was prepared by treatment of the corresponding sulfonium bromide 1 with sodium nitrite and hydrochloric acid in dioxane. Compound 2 reacts with o-aminothiophenol and with o-phenylenediamine to afford the new ketones 3 and 4, respectively. Oxidation of the latter with lead tetraacetate gave the benzotriazine derivative
多功能的,迄今未报告的苯并噻唑-2- ylcarbonylhydroximoyl酰氯(2)通过处理相应的溴化锍的制备1用亚硝酸钠和在二恶烷盐酸。化合物2下进行反应与ö -aminothiophenol并与邻苯二胺,得到新的酮3和4,分别。用四乙酸铅氧化后者,得到苯并三嗪衍生物7。的反应2与杂环胺配稠合杂环的新颖8,9,12,14和16。化合物2也与2-甲基硫代苯并咪唑反应,得到新的杂环体系18。在三乙胺的存在下用丙烯腈,丙烯酰胺和α-(苯并噻唑-2-基)肉桂腈(25)处理2,分别得到异恶唑衍生物21、23和27。